Mushrooming bullet and method of making same



E. J. JOHNSON I MUSHROOMING BULLET AND METHOD OF MAKING 5AME 1 FiledFeb.28, 1925 w INVENTOR EDWIMJJOHNSON F 7 13r%1/WAQ(Z 4 ATTORN s m w9,W%

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Patented Aug. 21, 1928.

Enwm J. JOHNSON, or ivfoNTREAL, QUEBEC, CANADA, AssIeN'on T0 TRIDGECQMPANY,LIMITED, 0E MONTREAL, CANADA. I

This invention relates to new and useful improvements in bullets, andamethod. of making same, and the object of the invention is to provide asporting bullet of the expansive or mushrooming type which will be1nexpensive to manufacture and which will flatten outat the nose withoutbreaking 01% forming aragged or broken end when it-hits an animaltarget, a featu'rewhichis very common in bullets now-in use. In otherwords, the outer shellof my bullet remains intact aft-erit hasmushroomed to its final shape.

Anotherobject of this invention is to provide a bullet of the classstated, which will be safely handled and which can, without fear ofaccident due to premature explosion, be used in repeating rifles havingmagazines.

A further object is to provide an expansive bullet which will give thesame accuracy as a solid nose bullet, such as military bullets orbullets used for high class target practice.

In my invention, I provide an easily manufactured bullet of the classstated, provided with an outer shell of copper or the like and an innercore of lead or like soft metal, said core being provided with a recessor cavity at one end adapted to be closed by the nose of the shell. Inmanufacturing the shell, it is drawn from a solid piece of copper,leaving one end open, and into the open end is placed the core, afterwhich the edges of the open end'of the shell are turned inwardly to holdthe core in position. To ensure that the fore part of the core isengaging with the inner walls of the shell at the nose, an indent ispressed therein, this indent also providing a feature which prevents anadjacent cartridge from being prematurely exploded when the bullet isused in a rifle having a magazine.

In the drawings Fig. 1 is a full size sectional elevation of my improvedexpansive bullet.

'Fig. 2 is an enlarged sectional elevation of the shell or casing beforethe core is placed therein. 7

Fig. 3 is an enlarged sectional elevation of the core. I

Fig. 4 is an enlarged sectionalelevation of the assembled bullet.

Fig. 5 is a plan looking on the nose of the assembled bullet.

Fig. 6 is a sectional plan of the bullet taken on the line 66, Figure 4.

' usHRooMINGnULLETANn METHOD or MAKING sAiuE.

Application filed February 28, 1925; 'SerialNo. 12,329.

. Fig. 7 is an enlarged sectional elevation of g f n names DOMINION CAR-Fig. 8 is a diagrammatic illustration of the 1 steps through course ofmanufacture, that is, from the solid block of material until it hasassumed the shape shown in Figure 2-.

which the shell passes int-he Referring more particularly to the drawings, 11'designates a solid piece ofwhich is pressed into its finalshape, nated 12, after passing through the 13, 14'. and';15.x Th

cop-per desi'g stages rial through a series of punches and =dies'( notshown). I have shown the material passing through four stages but thismay be increased or decreased according to the equipment of the plantmanufacturing same. The shell is shown enlarged in Figure 2. It will benotlced that the shell is slightly tapered from its base 16, which isthe open end of the shell, until it approaches a point approximatelymidway between the base and the nose 17. From this point it is taperedmore abruptly towards the nose by curving the casing towards its centre.This provides a one-part shell, into which is 18 or core of softmaterial. said core being adapted to conform to the shape of the innerwall of the shell and is provided with a recess or cavity 19, the depthof whichis approximately core. The core is pushed or pressed into theshell from its open base and the closed end or nose of the case isadapted to seal the open end of the cavity and confine a predeterminedvolume of air therein. Theedge 20- of the base of the shell is turnedinwardly to engage with and sink into the base 21 of the core to holdsame in position. A cannelure 22 may be formed in the outer wall of theshell for receiving theupper edge of the cartridge (not shown). Anindent 23 is pressed in the shell at its nose, so that thereis nopointed or rounded nose on the bullet which might contact with andpierce the primer of an adjacent cartridge when the bullet is used in amagazine rifle. This also serves to identify this type of bullet fromthe regular hard pointed bullets. The pressing of the indent alsoensures that the upper edge of the core will contact with the shell andsupport same equal to half the length of the.

is is accomplished by the well known process of passing the mate placeda lead slug.

at its nose. I Modifications maybe made in the shape of the bulletwithout, degarting 'from'thes irit ofthe invention.

When t e bullet strikes the flesh of the animal or object at which ithas been aimed,

the no se of the 'bullt lfnlushnooms. or out, as shown in Figure 7 Thisis' caused by thelhollow or weakened construction ei-[the nose ofthesoft metal or lead core which allows this to spread.Theshellpbeizngfnmdm of tougher and harder material, remains intact andholds the ends of the caazity closed,

thereby preventing the bullet from. bnrsting V and breaking up withinthe woundi on where the bullet "is lodged: will be? seen that the baseof the core/has moved towards jthe'nose ofthe shell and that the cavityis a closed byuthe lead,' which tendsto move to- Ward said nosewhentheifiull'etfhashit'its' mark. As will beseenvfrom: the foregoing,the bullet issi nply? and economically f'manu fa'ctured and lssupp'ortedby its. ooi'ev'h-dm the'base to thenose of the bullet, therebypioviding-a bullet which" 'can bef easily handled saidcore; beingformedwith a eayigy extendin'g inwardly from the nose end-Yo withoutdamaging same; By providing the'2 indent atthe nose, the danger ofexploding adiacent vided witlra. one-piece shell, is 'very accurate andcan be. used with the sain'e confidence as a solid or 7 military bulletused 7 in high ,class A mushroom bullet Comprising a one piece outerhollow-metal shell: closedat the nose endfandopenat the-Jother end, acore of V 'mouth of said pocketto seal saidr mouth and 1 toform anoutwardly facing depression; at:

' thexnose end of the V cartridges in'repeating or. magazine rifles iseliminated. The bullet, being proh ve hereu to set w i nnwm .1; Joimsonf

